题干
—May I have a look at _______ book tonight?
—Of course, you can. I have ________ old one at home.
—Of course, you can. I have ________ old one at home.
A：the; a
B：a; the
C：the; a
D：the; the
答案(点此获取答案解析）
C
2C（气）+xD（气）；△H＜0，5min达平衡，此时生成2molC，测得D的平均反应速率为0.1mol·(L·min)-1。下列说法中正确的是（ ）